This Seller Sessions episode features an in-depth interview with Matt Kostan, an entrepreneur, charting his journey from a non-entrepreneurial background to building multiple seven-figure brands on Amazon and beyond. The conversation traces his career path, highlighting key decisions and lessons learned, including successes with various products and setbacks due to supplier issues and changing regulations. Kostan emphasizes the importance of testing and iterative product development, drawing on his experience with split testing on Groupon and user testing in software development. He also discusses his company, Product Opinion, which provides consumer insights for Amazon sellers. The interview concludes with reflections on his darkest hours and his aspirations for a legacy of genuine helpfulness.